But when I created Secrets of the Whales, I did so with a desire to look at multiple species of whales. For instance, sperm whales do not intermingle with other genetically identical whales if they speak a different dialect. When sperm whales greet each other, they stop and say ‘hi.’ They really do. Coming up next is what Brian took away from his deep dive into the whale world. But it's also instantly apparent that we live on an ocean world that 72% of our surface is ocean.